package com.itheima.controller;

import com.itheima.pojo.Result;
import com.itheima.pojo.User;
import com.itheima.service.UserService;
import com.itheima.utils.JwtUtil;
import com.itheima.utils.Md5Util;
import com.itheima.utils.ThreadLocalUtil;
import lombok.extern.slf4j.Slf4j;
import org.apache.tomcat.util.security.MD5Encoder;
import org.hibernate.validator.constraints.URL;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StringUtils;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import javax.validation.constraints.Pattern;
import java.util.HashMap;
import java.util.Map;


@Slf4j
@RestController
@RequestMapping("/user")
@Validated
public class UserController {
    @Autowired
    private UserService userService;

    //注册
    @PostMapping("/register")//
    public Result register(@Pattern(regexp = "^\\S{5,16}$") String username,@Pattern(regexp = "^\\S{5,16}$") String password) {
        //查询用户
        User u =userService.findByUserName(username);
        if(u==null){
            //用户名没有被占用
            //注册
            userService.register(username,password);
            return Result.success();
        }else{
            //用户名被占用
            return Result.error("用户名已经被占用!");
        }
    }

    //登录
    @PostMapping("/login")
    public Result<String> login(@Pattern(regexp = "^\\S{5,16}$") String username,@Pattern(regexp = "^\\S{5,16}$")String password) {
        //根据用户名查询用户
        User loginUser = userService.findByUserName(username);

        //判断用户是否存在
        if(loginUser==null){
            return Result.error("用户名错误");
        }

        //判断密码是否正确
        if(Md5Util.getMD5String(password).equals(loginUser.getPassword())){
            Map<String,Object> claims = new HashMap<>();
            claims.put("id",loginUser.getId());
            claims.put("username",loginUser.getUsername());
            String token = JwtUtil.genToken(claims);
            return Result.success(token);
        }

        return Result.error("密码错误");
    }

//    查新用户信息
    @GetMapping("/userInfo")
    public Result<User> userInfo(/*@RequestHeader(name="Authorization")String token*/) {
        //根据用户名查询ID
//        Map<String ,Object> map = new JwtUtil().parseToken(token);
//        String username = map.get("username").toString();
        //获取threadlocal中存储的数据
        Map<String,Object> map = ThreadLocalUtil.get();
        String username =(String) map.get("username");
        User user = userService.findByUserName(username);
        return Result.success(user);

    }

    //更新用户基本信息

    @PutMapping("/update")
    public Result update(@RequestBody @Validated  User user) {
        userService.update(user);
        return Result.success();
    }

    //更新头像
    @PatchMapping("/updateAvatar")
    public Result updateAvatar(@RequestParam @URL String avatarUrl) {
        userService.updateAvatar(avatarUrl);
        return Result.success();
    }

    //更新用户密码
    @PatchMapping("/updatePwd")
    public Result update(@RequestBody Map<String,String> params){//由于需要填写的数据用户类里面没有，先要通过map接收在转化成数据赋值
        //1.接收检验参数
        String oldPwd = params.get("old_pwd");
        String newPwd = params.get("new_pwd");
        String rePwd = params.get("re_pwd");

        log.info("oldPwd:{}",oldPwd);
        log.info("newPwd:{}",newPwd);
        log.info("rePwd:{}",rePwd);

        if(!StringUtils.hasLength(oldPwd) || !StringUtils.hasLength(newPwd) || !StringUtils.hasLength(rePwd)){
            return Result.error("缺少必要的参数");
        }

        //原来的密码是否正确
        //调用service根据用户名拿到密码，再来和old比较
        Map<String,Object> map = ThreadLocalUtil.get();
        String username = (String)map.get("username");
        User loginUser = userService.findByUserName(username);
        if(!loginUser.getPassword().equals(Md5Util.getMD5String(oldPwd))){
            return Result.error("原密码填写不正确!");
        }


        //new和re不一样
        if(!rePwd.equals(newPwd)){
            return Result.error("两次填写密码不相同!");
        }

        //调用service完成密码更新
        userService.updatePwd(newPwd);
        return Result.success();


    }


}
